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3 years ago

Please help, I'll mark brainlist

Mathematics

1 answer:

My name is Ann [436]3 years ago

5 0

7=x this is for the first one but you have to 1
3
=

2
1
1
3
=
x
21
31=21x
2
1
⋅
1
3
=
2
1
⋅

2
1
21
⋅
1
3
=
21
⋅
x
21
21⋅31=21⋅21x
Multiply the numbers
Cancel multiplied terms that are in the denominator
7
=
2
1
⋅

2
1
7
=
21
⋅
x
21
7=21⋅21x
7
=

7
=
x
7=x
7
=

7
=
x
7=x

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3 years ago

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Nataliya [291]

Based on the given situation, if x is number of kilograms of lobster, you can write the following expressions:

51 + 5x cost in the first restaurant

33 + 8x cost in the second restaurant

In order to determine the value of x which makes the cost the same in both restaurants, equal the previous expressions and solve for x:

51 + 5x = 33 + 8x subtract 33 both sides and 5x subtract both sides

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1 year ago